Machine for manufacturing envelops and the like.



W. SPANNUTE & M, 8; MLHR. DUNNEBIER. MACHINE r03 MANUFAGTURXNG ENVELOPS ,AND THE LIKE. APPLICATION FILED APILB, 1908.

934,943, Patented Sept. 21, 1909.

UNITED STATES PATENT OFFICE. wim nniu srAnNU'rH AND MAX ntmnnnrna, or DRESDEN, AND MAX REINI-IOLD DUNNEBIER, or ELBERFELD, GERMANY, sssrenons TO CARL HERZBERG, or

COLOGNE, GERMANY.

MACHINE FOR. MANUFACTURING ENVELOPS AND THE LIKE.

Specification of Letters Iatent. Patented Sept, 1909,

- Original application filed April 9, 1906, Serial No. 310,820. Divided and this application filed April 3, 1908.

. Serial No.

To all whom "it may concern:

- "Be it known'that we, VVILHELM' SPA-NNUTH residing at Elberfeld, Germany, all subjects of the German Emperor, have invented new and useful Improvements in Machines for Manufacturing Envelops and the Like, of

which the following is a specification.

Our invention relates to machines for manufacturing en'velops and the like, in which the formation of-blanks into envelops or bags is effected by passing them through a set of rollers.

More'particularly the invention consists in a new and improved device for foldingthe upper or closing flap of the envelops or bags;

and the object of-the invent-ion to provide suchdevice in which the rollers rotate continuously in the same direction that is to say in which no oscillating rollers are provided whereby the number of revolutions of the machine may be considerably increased. We. 'attain this'object by themechanism illusof being made; Figs. 2, 3 and 4: are transverse sections of the folding device in different wprking position of the same; Fig. 5 is afront view of this device after the removal of the last roller.

Similar letters refer to similar parts throughout the several views.

A are the side frames of the machine, B, C and D are rollers the shafts 'b, c and d of which are journaled inthe frames A. The rollers are rotated in the direction of the arrows shown in Figs. 2, 3 and 4 by means of toothed wheels E situated upon the shafts of the rollers (as seen in Fig. 5.) F is a plate over which the article folded in the front part {of the machine up to the shape shown in 1 is shifted the lower edge G ahead,

between the rollers A and B. Behind the roll B tw guide-rails I are arranged. The upper ends of the rails are secured tot-he cross-piece J and the curved main parts of the rails partially surround the circumfer- I stop rail K which has arms L bent at right angles and secured to the side walls of the machine-frame. The rail K egrtends parallel to the roll B and is arranged in such a manner that there is only a small space between the lower edge of the rail and the s-urface of the roll B. At the location of the guide-rails I, the lower edge of the stop rail K is provided with notches M (Fig, 5). In the interior of the roll B are arranged grippers N which are carried by a shaft 0, which is mounted eccentrically to the shaft 1).

The shaft 0 projects with both ends beyond the ends of the roll B and on one of its ends is arranged a lever P having a roller Q pressing against the periphery of a cam disk R, which is loosely mounted on the shaft 7) and is held in position v by the bracket S which is carried by the machine frame. The lever P is held in contact with the circum ference of the cam disk by means of-a spiral spring T. On each revolution of the roll B,

the shaft 0 is consequently forced to swing once to the right or left, which causes the- C. Dlii'ing the rotation of the rollB, the

blank'is held by the grippers against the surface of the roll until the blank hits the stop Kas shown in Fig. 3. At that moment, the cam disk R causes the grippers N to release the blank. The upper closing flap V of the blank has at that time not quite left the rolls B and C, but the edge of the closing flap V has already passed the rolls B and C. The blank which is released from the grippers, will therefore place itself with the closing flap V on the lower roll Gin the ,rnaimer shown inFig. 4 and'will pass between the rolls G and "D with the edge '0 foremost. It may be added that recesses/V are provided in the roll C which, in the position shown in Fig. 2, permit of the grippers passing out from the interior of roll B to grip the blank from beneath.

This application is a division of our application filed April 9,1906, Serial No. 310.820.

We claim:

1. .,The combi ation with the lower roll and the upper roll B having slots therein, of

means for reversing the article passing between the rolls, sald means comprising grippers arranged within the upper r011, means for. oscillating said grippers to cause them to passthrough said slots to grip the article and carry it upward and a stop rail stop-.

the article passing between the rolls up ward along the upper roll, means for stopping the upward movement o fthe article and a third roll D situated at the side of the lower roll.

In testimony whereof we have signed our I names to this specification 1n subscrlbing witnesses.

WILHEI M .SPANNUTH. MAX DUNNEBIER. I I

MAX'REINHOLD DUNNEBIERL I Witnesses:

PAUL AREAS,

CLARE SIM N,

O'rro Kt'mio, v

WM. VASHINGTONIBRUNSWIQK.

the presence of 20 

